Parts · Diodes

1N5237A

Si Zener 8.2 V 500 mW DO-35 TH.2 circuits use this part.

Substitutes same voltage

Zeners of the same voltage. The figures are read off each part's datasheet (this one's from page 2), typical where the sheet gives a typical value, otherwise the maximum. Closest first; the last column says what differs. A different part can change the sound, and a circuit may lean on one particular figure, so read the build document's notes before you swap.

This part

Part	Vz	Power	Package	Boards
1N5237A	8.2 V	0.5 W	DO-35	2

500 mW zener in DO-35; B suffix is ±5 %, C is ±2 %.

Alternatives

Part	Vz	Power	Package	Boards	Differs
1N4738	8.2 V	1.3 W	DO-41	3	DO-41 body. 1.3 W zener in DO-41, ±5 % tolerance.
RD8.2EB	8.2 V	0.5 W	DO-35	1	500 mW zener; the B1-B4 suffix only picks a narrower slice of the voltage spread.

Faceplate	Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
	Moog Rogue 2N3904 · 2N3906 · 3080A · 353	—	Ring Mod / Synth	Experimentalists Anonymous	—	—	—	254
	Moog Rogue (PDF) 2N3904 · 2N3906 · 3080A · 4007	—	Ring Mod / Synth	Experimentalists Anonymous	—	—	—	257